CN204202808U - With the ceramic on metal pressure transducer of freeze plug - Google Patents
With the ceramic on metal pressure transducer of freeze plug Download PDFInfo
- Publication number
- CN204202808U CN204202808U CN201420744401.3U CN201420744401U CN204202808U CN 204202808 U CN204202808 U CN 204202808U CN 201420744401 U CN201420744401 U CN 201420744401U CN 204202808 U CN204202808 U CN 204202808U
- Authority
- CN
- China
- Prior art keywords
- ceramic core
- ceramic
- pressure sensor
- antifreeze plug
- cylindrical cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 239000000919 ceramic Substances 0.000 title claims abstract description 38
- 239000002184 metal Substances 0.000 title claims abstract description 16
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 16
- 230000002528 anti-freeze Effects 0.000 claims abstract description 22
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 16
- 239000010935 stainless steel Substances 0.000 claims abstract description 16
- 238000007789 sealing Methods 0.000 claims abstract description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000006835 compression Effects 0.000 claims abstract description 3
- 238000007906 compression Methods 0.000 claims abstract description 3
- 125000006850 spacer group Chemical group 0.000 claims description 2
- 230000008014 freezing Effects 0.000 abstract description 3
- 238000007710 freezing Methods 0.000 abstract description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- 239000004202 carbamide Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
本实用新型涉及压力传感器，尤其是带防冻塞的金属基陶瓷压力传感器，包括不锈钢外壳，不锈钢外壳包括上部的柱形腔和底部的连接螺口，不锈钢外壳的柱形腔上端由接插件封口，柱形腔和连接螺口的连接处有台阶，台阶中心有通孔，柱形腔内有陶瓷芯体，陶瓷芯体的底部通过压缩密封圈安装在不锈钢外壳的台阶上，陶瓷芯体和台阶中心内安装防冻塞，防冻塞中间有透气孔将防冻塞上下两端连通，陶瓷芯体顶部通过限位垫片和密封铜圈与PCB板下表面固定连接，PCB板的上表面与接插件之间安装有柔性板。该金属基陶瓷压力传感器防止测试环境结冰顶坏陶瓷芯体的膜片和防止外界压力产生应力对陶瓷芯体膜片的影响，延长了使用寿命。
The utility model relates to a pressure sensor, especially a metal base ceramic pressure sensor with an antifreeze plug. There is a step at the connection between the cylindrical cavity and the connecting screw, and there is a through hole in the center of the step. There is a ceramic core in the cylindrical cavity. The bottom of the ceramic core is installed on the step of the stainless steel shell through a compression sealing ring. The ceramic core and the step An antifreeze plug is installed in the center, and there is a vent hole in the middle of the antifreeze plug to connect the upper and lower ends of the antifreeze plug. The top of the ceramic core is fixedly connected to the lower surface of the PCB through a limit gasket and a sealing copper ring, and the upper surface of the PCB is connected to the connector. A flexible board is installed between them. The metal-based ceramic pressure sensor prevents the diaphragm of the ceramic core body from being damaged by freezing in the test environment and prevents the influence of stress generated by external pressure on the diaphragm of the ceramic core body, thereby prolonging the service life.
Description
技术领域 technical field
本实用新型涉及压力传感器，尤其是带防冻塞的金属基陶瓷压力传感器。 The utility model relates to a pressure sensor, in particular to a metal base ceramic pressure sensor with an antifreeze plug.
背景技术 Background technique
金属基陶瓷压力传感器是一个安装在大型卡车尾气处理用来测试尿素腔体压力的产品，金属基陶瓷压力传感器就是用于检测尿素腔压力，从而控制尿素的喷出量，使得尾气中NOX排放的减少。由于金属基陶瓷压力传感器需要在尿素环境中长时间工作，会使得尿素结晶进入金属基陶瓷压力传感器内，使得金属基陶瓷压力传感器失去其作用，缩短使用寿命。 The metal-based ceramic pressure sensor is a product installed in the exhaust gas treatment of large trucks to test the pressure of the urea chamber. The metal-based ceramic pressure sensor is used to detect the pressure of the urea chamber, thereby controlling the amount of urea sprayed, so that NO X emissions in the tail gas reduction. Since the metal-based ceramic pressure sensor needs to work in the urea environment for a long time, urea crystals will enter the metal-based ceramic pressure sensor, causing the metal-based ceramic pressure sensor to lose its function and shorten the service life.
实用新型内容 Utility model content
本实用新型解决的技术问题是提供一种寿命长的金属基陶瓷压力传感器。具体技术方案为： The technical problem solved by the utility model is to provide a long-life metal-based ceramic pressure sensor. The specific technical solutions are:
带防冻塞的金属基陶瓷压力传感器，包括不锈钢外壳，不锈钢外壳包括上部的柱形腔和底部的连接螺口，不锈钢外壳的柱形腔上端由接插件封口，柱形腔和连接螺口的连接处有台阶，台阶中心有通孔使得柱形腔与连接螺口相通，柱形腔内有陶瓷芯体，陶瓷芯体的底部通过压缩密封圈安装在不锈钢外壳的台阶上，陶瓷芯体和台阶中心内安装防冻塞，防冻塞中间有透气孔将防冻塞上下两端连通，陶瓷芯体顶部通过限位垫片和密封铜圈与PCB板下表面固定连接，PCB板的上表面与接插件之间安装有柔性板。 Metal-based ceramic pressure sensor with antifreeze plug, including a stainless steel shell, the stainless steel shell includes an upper cylindrical cavity and a connecting screw at the bottom, the upper end of the cylindrical cavity of the stainless steel shell is sealed by a connector, and the connection between the cylindrical cavity and the connecting screw There is a step at the center of the step, and a through hole in the center of the step makes the cylindrical cavity communicate with the connecting screw. There is a ceramic core in the cylindrical cavity, and the bottom of the ceramic core is installed on the step of the stainless steel shell through a compressed sealing ring. The ceramic core and the step An antifreeze plug is installed in the center, and there is a vent hole in the middle of the antifreeze plug to connect the upper and lower ends of the antifreeze plug. The top of the ceramic core is fixedly connected to the lower surface of the PCB board through a limit gasket and a sealing copper ring, and the upper surface of the PCB board is connected to the connector. A flexible board is installed between them.
不锈钢外壳底部连接螺口有密封圈。 The connecting screw at the bottom of the stainless steel shell has a sealing ring.
本实用新型提供的带防冻塞的金属基陶瓷压力传感器，在陶瓷芯体内增加材料为硅橡胶的防冻塞及其辅助结构，使得产品安装环境在结冰状态下和外界压力产生应力时不直接作用于陶瓷芯体的膜片而是作用于防冻塞，可以很好的防止测试环境结冰顶坏陶瓷芯体膜片和防止外界压力产生应力对陶瓷芯体膜片的影响，提高了产品的使用性能和延长了使用寿命。 The metal-based ceramic pressure sensor with antifreeze plug provided by the utility model adds an antifreeze plug made of silicon rubber and its auxiliary structure in the ceramic core body, so that the product installation environment does not directly act when the stress is generated by the freezing state and external pressure. The diaphragm of the ceramic core acts on the antifreeze plug, which can well prevent the test environment from freezing and damaging the diaphragm of the ceramic core and prevent the stress of the external pressure from affecting the diaphragm of the ceramic core, which improves the use of the product performance and extended service life.
附图说明 Description of drawings
图1是本实用新型的结构示意图。 Fig. 1 is a structural representation of the utility model.
具体实施方式 Detailed ways
下面结合附图对本实用新型作进一步说明。 Below in conjunction with accompanying drawing, the utility model is further described.
带防冻塞的金属基陶瓷压力传感器，包括不锈钢外壳9，不锈钢外壳9包括上部的柱形腔和底部的连接螺口，不锈钢外壳9的柱形腔上端由接插件1封口，柱形腔和连接螺口的连接处有台阶，台阶中心有通孔使得柱形腔与连接螺口相通，柱形腔内有陶瓷芯体6，陶瓷芯体6的底部通过压缩密封圈7安装在不锈钢外壳9的台阶上，陶瓷芯体6和台阶中心内安装防冻塞10，防冻塞10中间有透气孔将防冻塞10上下两端连通，陶瓷芯体6顶部通过限位垫片5和密封铜圈4与PCB板3下表面固定连接，PCB板3的上表面与接插件1之间安装有柔性板2。 A metal-based ceramic pressure sensor with an antifreeze plug, including a stainless steel housing 9, the stainless steel housing 9 includes an upper cylindrical cavity and a connecting screw at the bottom, the upper end of the cylindrical cavity of the stainless steel housing 9 is sealed by a connector 1, the cylindrical cavity and the connection There is a step at the connection of the screw, and a through hole in the center of the step makes the cylindrical cavity communicate with the connecting screw. There is a ceramic core 6 in the cylindrical cavity, and the bottom of the ceramic core 6 is installed on the stainless steel shell 9 through a compression sealing ring 7. On the steps, an antifreeze plug 10 is installed in the ceramic core 6 and the center of the step. There is a vent hole in the middle of the antifreeze plug 10 to connect the upper and lower ends of the antifreeze plug 10. The top of the ceramic core 6 is connected to the PCB through the spacer 5 and the sealing copper ring 4. The lower surface of the board 3 is fixedly connected, and the flexible board 2 is installed between the upper surface of the PCB board 3 and the connector 1 .
不锈钢外壳9底部连接螺口有密封圈8。带防冻塞的金属基陶瓷压力传感器安装使用不漏气。 There is a sealing ring 8 at the bottom connecting screw of the stainless steel shell 9 . The metal-based ceramic pressure sensor with antifreeze plug is airtight for installation and use.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744401.3U CN204202808U (en) | 2014-12-01 | 2014-12-01 | With the ceramic on metal pressure transducer of freeze plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420744401.3U CN204202808U (en) | 2014-12-01 | 2014-12-01 | With the ceramic on metal pressure transducer of freeze plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204202808U true CN204202808U (en) | 2015-03-11 |
Family
ID=52660753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420744401.3U Expired - Fee Related CN204202808U (en) | 2014-12-01 | 2014-12-01 | With the ceramic on metal pressure transducer of freeze plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204202808U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352650A (en) * | 2015-11-27 | 2016-02-24 | 上海立格仪表有限公司 | Piston induction amplifiable type Hart bus measuring instrument |
| CN106052953A (en) * | 2016-08-15 | 2016-10-26 | 西安森瑟斯传感器有限公司 | Shock-resistant ice-blockage resistant pressure transmitter |
| CN106840502A (en) * | 2017-04-09 | 2017-06-13 | 单志友 | Pressure sensor and its manufacture method |
| CN108362433A (en) * | 2018-04-15 | 2018-08-03 | 无锡盛赛传感科技有限公司 | A kind of encapsulating structure of anti-freeze type ceramic pressure sensor |
| CN108426597A (en) * | 2018-06-01 | 2018-08-21 | 无锡莱顿电子有限公司 | A kind of sensor with anti-freezing structure |
| CN108562392A (en) * | 2018-04-04 | 2018-09-21 | 合肥皖科智能技术有限公司 | A kind of encapsulating structure of capacitive pressure transducer |
| CN109989808A (en) * | 2019-04-30 | 2019-07-09 | 凯龙高科技股份有限公司 | A kind of anti-freeze type pressure switch for urea pump |
| CN112798177A (en) * | 2021-01-29 | 2021-05-14 | 无锡莱顿电子有限公司 | An antifreeze plug structure applied to a pressure sensor |
| CN116026523A (en) * | 2022-12-07 | 2023-04-28 | 孝感华工高理电子有限公司 | Antifreezing urea pressure sensor |
-
2014
- 2014-12-01 CN CN201420744401.3U patent/CN204202808U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352650A (en) * | 2015-11-27 | 2016-02-24 | 上海立格仪表有限公司 | Piston induction amplifiable type Hart bus measuring instrument |
| CN106052953A (en) * | 2016-08-15 | 2016-10-26 | 西安森瑟斯传感器有限公司 | Shock-resistant ice-blockage resistant pressure transmitter |
| CN106840502A (en) * | 2017-04-09 | 2017-06-13 | 单志友 | Pressure sensor and its manufacture method |
| CN108562392A (en) * | 2018-04-04 | 2018-09-21 | 合肥皖科智能技术有限公司 | A kind of encapsulating structure of capacitive pressure transducer |
| CN108362433A (en) * | 2018-04-15 | 2018-08-03 | 无锡盛赛传感科技有限公司 | A kind of encapsulating structure of anti-freeze type ceramic pressure sensor |
| CN108426597A (en) * | 2018-06-01 | 2018-08-21 | 无锡莱顿电子有限公司 | A kind of sensor with anti-freezing structure |
| CN109989808A (en) * | 2019-04-30 | 2019-07-09 | 凯龙高科技股份有限公司 | A kind of anti-freeze type pressure switch for urea pump |
| CN112798177A (en) * | 2021-01-29 | 2021-05-14 | 无锡莱顿电子有限公司 | An antifreeze plug structure applied to a pressure sensor |
| CN116026523A (en) * | 2022-12-07 | 2023-04-28 | 孝感华工高理电子有限公司 | Antifreezing urea pressure sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 |